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Worksheets401-500
Total questions: 101
Worksheet time: 51mins
Name
Class
Date
1.
401. A transistor has three terminal are (Level 1)
a)
a) Source, Gate, Drain
b)
b) Emitter, Base, Collector
c)
c) Source, Base, Drain
2.
402. Two transistor types are (Level 1)
a)
a) NPN transistor and PNP transistor
b)
b) NPP transistor and PPN transistor
c)
c) NNP transistor and PNN transistor
3.
403. A transistor is used as (Level 1)
a)
a) A fast electronic switch
b)
b) A regulator for small and medium DC voltages and currents
c)
c) A fast electronic switch or regulator for small and medium DC voltages and currents
4.
404. If the arrow points outside the transistor (Level 1)
a)
a) It is a NPN transistor
b)
b) It is a PNP transistor
c)
c) It is a NPN or PNP transistor
5.
405. If the arrow points from emitter to base, the transistor is (Level 1)
a)
a) NPN transistor
b)
b) PNP transistor
c)
c) NPN or PNP transistor
6.
406. In a transistor, number of sequential semiconductor layers are (Level 1)
a)
a) 2
b)
b) 3
c)
c) 4
7.
407. The Middle layer of transistor is called (Level 1)
a)
a) Emitter
b)
b) Base
c)
c) Collector
8.
408. What are Integrated Circuits? (Level 1)
a)
a) Integrated Circuits are conections of several electronic components by wiring
b)
b) Integrated Circuits are arrangements of several electronic components in a
common housing
c)
c) Integrated Circuits are arrangements of semiconductor layers
9.
408. What is the major advantage of integrated circuits? (Level 1)
a)
a) Very high density of the components
b)
b) They are quit resistant to mechanical stress
c)
c) They are very cheap
10.
409. Usually the following components are integrated in ICs (Integrated Circuit) (Level 1)
a)
a) Semiconductors (Transistors, Diodes), Resistors
b)
b) Semiconductors (Transistors, Diodes), Capacitors
c)
c) Semiconductors (Transistors, Diodes), Resistors, Capacitors
11.
410. What are the disadvantages of integrated circuits? (Level 1)
a)
a) Small housing and therefore the small surface
b)
b) ICs can not be repaired
c)
c) Small housing and therefore the small surface, ICs can not be repaired
12.
411. Which following components are integrated in ICs? (Level 1)
a)
a) Transistors, Diodes, Resistors and Capaciors
b)
b) Transistors, Diodes, Resistors and Inductances
c)
c) Transistors, Diodes, Inductances and Capaciors
13.
412. Which component usually can not be integrated due to their large space requirements? (Level 1)
a)
a) Capaciors
b)
b) Inductances
c)
c) Transistors
14.
413. Usually ICs are made from (Level 1)
a)
a) Very pure Silicon
b)
b) Very pure Germanium
c)
c) Impure Silicon
15.
414. The operational amplifier is always a differential amplifier with (Level 1)
a)
a) One input and one output
b)
b) One input and two outputs
c)
c) Two inputs and one output
16.
415. The inverting input of operational amplifier is usually designated with (Level 1)
a)
a) A plus sign
b)
b) A minus sign
c)
c) A minus output
17.
416. The dimensions of operational amplifiers are (Level 1)
a)
a) Very large
b)
b) Medium
c)
c) Very small
18.
417. The PCBs have been a popular medium for the installation of electronic components since (Level 1)
a)
a) The early of 1950s
b)
b) The 1970s
c)
c) The 2000s
19.
418. A multi-layer PCB has (Level 1)
a)
a) Two or more layers on one or both sides
b)
b) One layer on either side
c)
c) Two or more layers connected in series
20.
419. A Printed Circuit Board (PCB) is constructed of a plastic laminate which has bonded to one or both sides (Level 1)
a)
a) a thick sheet of copper
b)
b) a thin sheet of copper
c)
c) various thicknesses of copper
21.
420. What is the base material of a PCB? (Level 1)
a)
a) Insulator
b)
b) Semiconductor
c)
c) Conductor
22.
421. For printed circuit boards. Which material are also used for specialized applications? (Level 1)
a)
a) Polyester, Teflon
b)
b) Polyester and ceramics
c)
c) Polyester, Teflon and ceramics
23.
422. TR is the abbreviation for a (Level 1)
a)
a) transmitter Resolver
b)
b) torque receiver
c)
c) torque synchro
24.
423. TX is the abbreviation for a (Level 1)
a)
a) torque receiver
b)
b) control transformer
c)
c) torque transmitter
25.
424. Servo systems can be loosely divided into (Level 1)
a)
a) Two different types
b)
b) Three different types
c)
c) Four different types
26.
425. Synchros compare in construction to alternating current generators are (Level 1)
a)
a) Similar
b)
b) Difference
c)
c) More complex
27.
426. Synchros work like (Level 1)
a)
a) Voltage regulators
b)
b) Induction regulators
c)
c) Resistance regulators
28.
427. Differential transmitters are used to (Level 1)
a)
a) Add or subtract angles
b)
b) Add or subtract two electrical signals
c)
c) Increase the operating speed of the synchro receiver
29.
428. Rotating magnetic field is no longer possible if (Level 1)
a)
a) A stator lead is broken
b)
b) A stator winding is defective
c)
c) If a stator lead is broken or a stator winding is defective
30.
429. Resolvers have coils in the stator and the rotor which are displaced by (Level 1)
a)
a) 0 degrees from each other
b)
b) 180 degrees from each other
c)
c) 90 degrees from each other
31.
430. An LVDT is used to transfer (Level 1)
a)
a) linear movements
b)
b) linear movements but also angular movements
c)
c) angular movements
32.
431. To measure position or speed of a component. Which principle is can be use (Level 1)
a)
a) The principle of Resistance
b)
b) The principle of Inductance
c)
c) The principle of capacitance
33.
432. All Monitors for EIS (Level 1)
a)
a) are same type in all aircrafts
b)
b) are same type in an aircraft
c)
c) are difference type in an aircraft
34.
433. All modern aircraft use (Level 1)
a)
a) Electronic Instrument Display Systems
b)
b) Analoge Indicator
c)
c) Analoge technology
35.
434. A typical Electronic System has the following components (Level 1)
a)
a) Display Computers, Display Units and Control Panels
b)
b) Display Computers, Display Units and Keyboards
c)
c) Display Computers, Display Units and Mouse
36.
435. What generation of display unit are installed in the early 80’s (Level 1)
a)
a) LCD display units
b)
b) Simple cathod ray tubes
c)
c) Display units
37.
436. Which generation of display unit are installed since 90’s (Level 1)
a)
a) LCD display units
b)
b) Simple cathod ray tubes
c)
c) Analogue Display Units
38.
437. Which Display Unit indicate the data of naviagtion system? (Level 1)
a)
a) Primary Flight Display (PFD)
b)
b) Navigation Display (ND)
c)
c) System Display (SD)
39.
438. The lower center display unit is called (Level 1)
a)
a) System display
b)
b) Engine Indication display
c)
c) Warning display
40.
439. The two groups indicators in the cockpit are (Level 1)
a)
a) Flight surveillance and Engine surveillance
b)
b) Aircraft surveillance and Engine surveillance
c)
c) Flight surveillance and Aircraft surveillance
41.
440. The inputs of Display computers are: (Level 2)
a)
a) Navigation data, Auto Flight System data and Display Unit
b)
b) Engine data and Auto Flight System data and Display Unit
c)
c) Navigation data, Auto Flight System data, Engine data and Data from various aircraft systems.
42.
441. Each pilot has two Display Units. They are (Level 2)
a)
a) Primary Flight Display (PFD) and System Display (SD)
b)
b) Primary Flight Display (PFD) and Navigation Display (ND)
c)
c) Navigation Display (ND) and System Display (SD)
43.
442. How many display computers on aircraft? (Level 2)
a)
a) Two display computers
b)
b) Three display computers
c)
c) There are at least two display computers. Large aircraft have a third display computer for redundancy
44.
443. Which informations are displayed on the Electronic Flight Instruments? (Level 2)
a)
a) The navigation data
b)
b) The navigation data and the information about the activities of the auto flight system
c)
c) The information about the activities of the auto flight system
45.
444. The upper center display shows (Level 2)
a)
a) Alerts from various aircraft systems if something is out of limit
b)
b) Aircraft System data
c)
c) The information about the activities of the auto flight system
46.
445. Which components are form a display unit (Level 2)
a)
a) Cathod ray tube and Symbol Generator Unit (SGU)
b)
b) Cathod ray tube and symbol generator
c)
c) Cathod ray tube and Display Management Computer (DMC)
47.
446. Which indicator is belongs to Flight surveillance group? (Level 2)
a)
a) Heading indicator
b)
b) Position Indication
c)
c) EGT indicator
48.
447. Which indicator is belongs to Aircraft surveillance group? (Level 2)
a)
a) Position indication
b)
b) Altimeter
c)
c) Fuel indicator
49.
448. The Base of Binary Number System is (Level 1)
a)
a) 2
b)
b) 6
c)
c) 8
50.
449. What is used for the power of 10? (Level 1)
a)
a) Binary.
b)
b) Decimal.
c)
c) Octal
51.
450. If a data message is made up of 1s and 0s, it is. (Level 1)
a)
a) analogue
b)
b) binary
c)
c) digital
52.
451. A hexadecimal is a number to base (Level 1)
a)
a) 2
b)
b) 8
c)
c) 16
53.
452. A computer message 3B4 is. (Level 1)
a)
a) Binary
b)
b) hexadecimal
c)
c) Octal
54.
453. A number represented as a physical quantity, e.g. voltage or speed of rotation is (Level 1)
a)
a) digital
b)
b) analogue
c)
c) Discrete
55.
454. If a signal has quantity in volts and physical position it is (Level 1)
a)
a) digital
b)
b) synchronous
c)
c) analogue
56.
455. An A/D (Analogue/Digital) converter converts (Level 1)
a)
a) A continuous voltage signal, or analog signal into a multi-bit digital word
b)
b) A continuous voltage signal into a multi-bit digital word
c)
c) Discrete signal into a multi-bit digital word
57.
456. The sawtooth principle uses (Level 1)
a)
a) a sawtooth created by the converter and compates it with the output voltage
b)
b) a sawtooth created by the converter and compates it with the input voltage
c)
c) a sawtooth created by the converter and compates it with the input current
58.
457. A ramp generation A/D converter compares (Level 1)
a)
a) the unknown input voltage to a D/A with output voltage
b)
b) the certain input voltage to a D/A connected as a ramp generator
c)
c) the unknown input voltage to a D/A connected as a ramp generator
59.
458. Why does an ARINC databus system send data to LRUs in series? (Level 1)
a)
a) Saves weight
b)
b) More information can be sent
c)
c) Takes less time
60.
459. An ARINC 429 bus uses (Level 1)
a)
a) a single twin cable for each transmitter
b)
b) a twisted shielded pair of wires
c)
c) two bi-directional twin, sheathed and earthed wires
61.
460. In the ARINC 429 digital information transfer system, data may travel in (Level 1)
a)
a) both directions on the same bus simultaneously
b)
b) one direction only
c)
c) both directions on the same bus sequentially by time multiplexing
62.
461. ARINC 629 is used for (Level 1)
a)
a) emergency only
b)
b) a backup to ARINC 429
c)
c) supports a multi-transmitter and bidirectional approach to digital data communications
63.
462. ARINC 629 is (Level 1)
a)
a) half duplex
b)
b) full duplex
c)
c) simplex
64.
463. A simplex system has (Level 1)
a)
a) one transmitter, one receiver
b)
b) a bus controller and separate controller
c)
c) one transmitter, many receivers
65.
464. An ARINC 429 system uses a. (Level 1)
a)
a) 20 bit word over a bi-directional bus
b)
b) 32 bit word over a twisted pair of wires
c)
c) 16 bit word over a twisted pair of wires
66.
465. RZ bi-polar modulation consists of bits which are one of __________ states? (Level 1)
a)
a) Two
b)
b) Three
c)
c) Four
67.
466. Where is the parity bit installed in a data word? (Level 1)
a)
a) Front
b)
b) End LSB
c)
c) End MSB
68.
467. What system uses base 8? (Level 1)
a)
a) ARINC 429, in dataword labels only
b)
b) ARINC 573
c)
c) ARINC 629
69.
468. ARINC 429 SDI word format is at bits (Level 2)
a)
a) 32
b)
b) 30-31
c)
c) 9-10
70.
469. In an ARINC 429 digital word bit number 32 is used for (Level 2)
a)
a) terminating the data field
b)
b) identifying word type
c)
c) checking parity
71.
470. In an ARINC 429 Word label-representing heading is 320, this is represented in bits 1- 8 as (Level 2)
a)
a) 01011001
b)
b) 00001011
c)
c) 01101000
72.
471. How is the word label 206 written in ARINC 429? (Level 2)
a)
a) Binary 11000110
b)
b) Octal 01100001
c)
c) Decimal 206
73.
472. An ARINC 429 Binary Coded Decimal word occupies word bits (Level 2)
a)
a) 1-8
b)
b) 11-28
c)
c) 11-29
74.
473. In ARINC 429 data field is bits 11 to 28. If the bits 11 to 18 had pad bits, the L.S.B. Of the data would be (Level 2)
a)
a) Bit 11
b)
b) Bit 18
c)
c) Bit 19
75.
474. An ARINC 629 stub cable (Level 2)
a)
a) connects single directional data between the LRU and current mode coupler
b)
b) connects bi-directional data between the LRU and current mode coupler
c)
c) connects bi-directional data between two LRUs
76.
475. The general arrangement of ARINC 629 includes (Level 2)
a)
a) databus cable, current mode coupler, stub cable
b)
b) current mode coupler, databus cable only
c)
c) current mode coupler, stub cable only
77.
476. To connect an LRU to the data bus (Level 2)
a)
a) a terminal controller and interface module only is required
b)
b) current mode coupler, terminal controller and a production break is required
c)
c) a current mode coupler, serial interface module and terminal controller is required
78.
477. ARINC 629 current mode couplers are (Level 2)
a)
a) capacitive
b)
b) inductive
c)
c) resistive
79.
478. When the voltage that represents a logic 1 state is less than the voltage that represents a logic 0 state, the logic being used is (Level 1)
a)
a) positive
b)
b) negative
c)
c) either positive or negative
80.
479. In Positive Logic representation (Level 1)
a)
a) state 1 is more positive than state 0
b)
b) state 0 is more positive than state 1
c)
c) both states have same positive voltages but stage 1 has more current
81.
480. The output of a NOT gate is logic 1. The input is (Level 1)
a)
a) logic 0
b)
b) logic 1
c)
c) both logic 0 and 1
82.
481. For logical combination there are only three basic functions (Level 1)
a)
a) INVERTER function, AND function and SUB function
b)
b) INVERTER function, SUB function and OR function
c)
c) INVERTER function, AND function and OR function
83.
482. With INVERTER function. What is correct statement? (Level 1)
a)
a) If the input signal is a logical 1. The output signal is also a logical 1
b)
b) If the input signal is a logical 0. The output signal is also a logical 0
c)
c) If the input signal is a logical 1. The output signal is a logical 0 and vice versa
84.
483. The Inverter (NOT-Function) (Level 1)
a)
a) inverts the input signal
b)
b) is called a boolean
complement
c)
c) inverts the input signal. It is also called a boolean complement
85.
484. For logic AND gate, the output has a logic 0 if (Level 1)
a)
a) All inputs have a logic 0
b)
b) One or more inputs have a logic 0
c)
c) All inputs have a logic 1
86.
485. For logic AND gate, the output has a logic 1 if (Level 1)
a)
a) All inputs have a logic 1
b)
b) One or more inputs have a logic 1
c)
c) All inputs have a logic 0
87.
486. An AND gate with inverted inputs and an inverted output is equivalent to (Level 2)
a)
a) an OR gate
b)
b) a NOR gate
c)
c) a NAND gate
88.
487. A NAND gate has inputs A and B and output C. If the output (c) was zero, what are the inputs? (Level 2)
a)
a) A=0, B=0
b)
b) A=1, B=1
c)
c) A=1, B=0
89.
488. Adding invertors to the two inputs of an AND gate makes a (Level 2)
a)
a) OR gate
b)
b) NOR gate
c)
c) NAND gate
90.
489. What sort of gate requires two positive voltages to operate? (Level 2)
a)
a) AND
b)
b) OR
c)
c) NAND
91.
490. Which logic gate can be represented as a parallel circuit? (Level 2)
a)
a) OR gate
b)
b) Exclusive OR gate
c)
c) AND gate
92.
491. For logic NAND gate (Not-AND-Gate), the output have logic 1 if (Level 2)
a)
a) All inputs have a logic 1
b)
b) One input has a logic 1
c)
c) One input has a logic 0
93.
492. For logic NAND gate (Not-AND-Gate), the output have logic 0 if (Level 2)
a)
a) All inputs have a logic 0
b)
b) All inputs have a logic 1
c)
c) One input has a logic 1
94.
493. What sort of gate requires two negative input voltages to operate? (Level 2)
a)
a) NAND
b)
b) AND
c)
c) NOR
95.
494. What is a Computer? (Level 1)
a)
a) is a machine that processes data by means of digital technologies
b)
b) is a machine that processes data by means of analogue technologies
c)
c) is a machine that receive data by means of digital technologies
96.
495. What does Hardware mean? (Level 1)
a)
a) all devices that are required to process binary data in analogue systems
b)
b) all devices that are required to collect binary data in analogue systems
c)
c) all devices and components that are required to process binary data in digital systems
97.
496. What is the software? (Level 1)
a)
a) Software is an order of instructions that tells how to process data
b)
b) Software is a common word which is used to describe all kinds of programms
c)
c) Software is a programm
98.
497. Which following form a computer? (Level 1)
a)
a) Hardware and Processor
b)
b) Program and Software
c)
c) Hardware and Software
99.
498. A computer consist of at least the C.P.U and (Level 1)
a)
a) Memory and input & output port
b)
b) Memory, ALU, input & output port
c)
c) Memory, input & output interface and bus system
100.
499. Which components are In the “Computation“ section of the FCC? (Level 2)
a)
a) Processor and Analogue Digital Converter
b)
b) Processor and Memory
c)
c) Processor and Bus-System
101.
500. How many bytes can be carried in a 32 bit word? (Level 2)
a)
a) 8 bytes
b)
b) 32 bytes
c)
c) 4 bytes
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